Versatile waterproof binoculars with roof prisms from National Geographic series that are ideal for water sports and sailing and come supplied with a special floating strap which makes them unsinkable. Thanks to the fully coated BaK-4 glass optics including 42mm objectives, they provide high contrast and true colour image in 10x magnification, with 101m field of view They also feature twist-up eyecups and dioptre compensation for spectacle wearers, tripod thread and smoothly operating centre wheel. The objective cap system allows for quick opening and closing and the caps can be completely removed without any difficulty. The binoculars are supplied in a practical case. Dimensions: 150 x 130 x 55 mm. Weight: 710 g.